ERROR: 9-patch image C:\...\res\drawable\appwidget.9.png malformed. Frame pixels must be either solid or transparent (not intermediate alphas).

this is the problem with latest adt that is 20.0.3. you can instead rename the *.9.png to *.png and start working. i think this is the bug with the adt only, since for 18.0.0 version adt it doesnt prompts for this type of error and works fine

 

 

就是把.9.png 后缀改成 .png